unicorn_rails cleanup (possible fix for Rails3) pushed

Hongli Lai hongli at phusion.nl
Tue Jun 8 15:25:38 EDT 2010

On Tue, Jun 8, 2010 at 9:20 PM, Eric Wong <normalperson at yhbt.net> wrote:
> Thanks Hongli, so this only affects people who remove the
> config.ru that Rails 3 creates for them?  Yikes...

No. The problem even occurs if you already have config.ru. But the
thing is, Rails 3 has deprecated ActionController::Dispatcher a few
weeks ago and replaced it with a stub. Rails::Rack::Static changed its
interface and must be constructed differently. The only way to obtain
a valid Rack endpoint for the app seems to be parsing

> A few comments:
> +  if ::Rails::VERSION::MAJOR >= 3 && ::File.exist?('config/application.rb')
> +    ::File.read('config/application.rb') =~ /^module (.+)$/
> Maybe a more flexible regexp like this: /^module\s+([\w:]+)\s*$/ (or
> maybe even starting with: "^\s*") would be more reliable for folks who
> leave extra spaces around.

I think it's easier to just call 'strip'. :)

> Unfortunately, Ruby is not Python :)
> @@ -148,9 +167,9 @@ def rails_builder(daemonize)
>       else
>         use Rails::Rack::LogTailer unless daemonize
>         use Rails::Rack::Debugger if $DEBUG
> +        use Rails::Rack::Static, map_path
>         map(map_path) do
> -          use Rails::Rack::Static
> -          run ActionController::Dispatcher.new
> +          run rails_dispatcher
> Changing the call to use Rails::Rack::Static there is wrong.  map_path
> is the URI prefix (RAILS_RELATIVE_URL_ROOT) and not the static file
> path we serve from.  It appears the deprecation in Rails 3 broke some
> things and ActionDispatch::Static is configured slightly differently.
> Let me know if the edited patch below looks alright to you.

Yes it looks fine. A bit overcomplicated regexp compared to using
'strip' but whatever works. :)

With kind regards,
Hongli Lai
Phusion | The Computer Science Company

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